The m2mtest command performs throughput data
transfer tests between two device memory banks on a specified card. Note, only
platforms supporting M2M feature, see , can
run this command. In addition, it is necessary to download an
xclbin on the card which uses at least two memory banks prior
to running m2mtest, else running this command
returns an error. The m2mtest command only
performs throughput tests on those memory banks accessed by the
xclbin downloaded to the card.
It has the following command line format:
xbutil m2mtest [-d card]The following table lists the available option.
| Option | Description | Required |
|---|---|---|
-d
<card>
|
Specifies the target card. <card> can be specified as either
the card_id or Bus:Device:Function (BDF). Defaults to card_id = 0 if
not specified. Note: Use the
xbutil
scan command to display both the card_id and BDF
for installed cards. |
N |
An example of the command output with an xclbin using DDR
banks 0, 1, 2, and 3 is shown below:
INFO: Found total 2 card(s), 2 are usable
bank0 -> bank1 M2M bandwidth: 12050.5 MB/s
bank0 -> bank2 M2M bandwidth: 12074.3 MB/s
bank0 -> bank3 M2M bandwidth: 12082.9 MB/s
bank1 -> bank2 M2M bandwidth: 12061.8 MB/s
bank1 -> bank3 M2M bandwidth: 12105.2 MB/s
bank2 -> bank3 M2M bandwidth: 12065.8 MB/s
INFO: xbutil m2mtest succeeded.If no xclbin has been loaded, the following error message
will be displayed:
'uuid' invalid, please re-program xclbin.If the command is run on platforms not supporting M2M feature, the following error will be displayed:
M2M is not available. Skipping validation
ERROR: xbutil m2mtest failed.